Windmill



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2 Sheets-Sheet 1.

Patented Ma.1'.20, 1883.

L. M. HOSKINS.

WINDMILL.

(No-Model.)

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(No Model.)

L. M. HOSKINS.

4 W'INDMILL.

Patented May. 20

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yNITED STATES PATENT OEEICE.

`LEANDER M. HOSKINS, OF MADISON, WISCONSIN.

WINDMILL.

SPECIFICATION forming part of `Letters Patent No. 274,329, dated March 20, 1883.V

Application tiled January 26, 1883. (No model.)

To all whom it may concern:

Be it known that I, LEANDER M. Hoskins, of Madison, in the county of Dane and State ot' Wisconsin, have invented a new and useful Improvementin Windmills; and I do hereby declare that the following is a full and exact description of the same,freference being had to the accompanying drawings, and to the letters of reference marked thereon. j

My invention relates to an improvement in windmills, its object being to furnish means forV gearing windmills, so that power may be transmitted from the wind-wheel shaft to the machinery to be driven independently ot' the motion of the turn-table.

To the accomplishment of the above the invention consists in the employmentof a secondary or compensating turn-table revolved by and with the `main turn-table; and, further,

inthe novel construction and arrangement of certain other parts, all as will be `hereinafter fully described and claimed.

In order that those skilled in the art to which it pertains may understand my invention,

I will now give a detailed description of the same, making frequent reference to the accompanying drawings, which form part of this specification, and in which- Figure 1 is a view partly in perspective and partly in section, and in which 'the principal features of my invention are shown; Fig. 2, a similar view, showing amodilication of the construction shown in Fig. 1; and Fig 3, a view in detail, showing the manner of connecting certain parts of the device.

Like letters refer to corresponding parts in the several views.

In the drawings, A represents the windwheel shaft, which has bearings in a suitable box or casing, A', said casing being mounted npon a support, A2. This support A2 is firmly secured at its lower end to the main turn-table K, which will be hereinafter referredto, and` l center line of turn-table K. Secured to the shaft D is a second gear-wheel, E, which in its revolution meshes with a gear-wheel, F,

keyed to the upper end of a shaft, Gr. The shaft G has bearn gs in the compensating turntable marked H, and passesobliquely down- .ward to the center line of the tower, where it is coupled by means of a universal joint, M,

to a vertical shaft, N, said shaft N connecting in any suitable manner with the machinery to be driven. 4

The main turn-table K is formed of any suitable material, and consists of a cylinder with inwardly-projecting iianges at its upper an lower ends. such a size that it will encircle the tower-casting L and revolve about thesame. As before mentioned, there is an upwardly-projecting arm or support, A2, which connects this turn-table with the casin g in which the wheelshaft has its bearings.

The tower-castin g L, above referred to, has at its upper end an outwardly-projecting flange situated between the inwardly projecting anges ot' the turn-table K, above described.

,This ange is of such a shape as toform suitable paths for the friction wheels or rollers I. Of these rollers there are two sets or series. Those of the upper set are carried upon journals fixed to the compensating turntable H at its circumference, and those of the lower set are carried in a like manner upon journals fixed to a ring, H', made for the purpose. This lower set of rollers are employed for the purpose of enabling the turntable K t0 lswivel easily upon the tower-casting. lAs shown in the drawings, the main turn-table K rests upon the` upper set of friction-wheels, and is of such a depth that its lower flange will press against the lower set of such wheels. The compensating turn-table H is, as shown, smaller The turn-table thus formed is of4 than the main turn-table K, and revolves within IOO the means for revolving the compensating turnf table. As shown in that gure, the two turntables are arranged the one below the other. Each of the turn-tables K and H is provided on its circumference with a series of gear-teeth, which engage with pinions O and R, mounted respectively upon the upper and lower end of a vertical shaft, P, said shaft having bearings in suitable brackets secured to tower-casting L. By means of this construction it will be seen that upon the-revolution of turn-table K pinion is revolved, and with it the shaft P and pinion R, motion being imparted to turntable H through the medium of said pinion It.

It will be apparent that many other constructions might be employed to impart motion to the compensating turn-table; but it will not be necessary to particularly describe such constructions.

As long as the position of the wind-wheel is not changed bya change of wind theturn-table K and compensating turn-table H will remain at rest, and the operation of the machine will be obvious, power being imparted to themachinery to be driven from the wind-Wheel shaft through the medium ofthe gear-wheels and shafts hereinbet'ore described. When, however, the wind-currents change, the position of the wind-Wheel is changed and the turntable K is revolved, the gear-wheels O and E being simultaneously revolved by the change in the position of the gear-wheel B, mounted on shaft A.

It will be readily understood that if the compensating turn-table H were stationary, or if the shaft G had its bearing-in any other stationary part of the machine, the velocity of said shaft in its revolutiorrwould be changed by the change in the velocity of revolution ot' wheel E, caused by the revolution of turntable K. When, however, the turntable K is revolved, motion is imparted to the compellsating turn-table H by means of frictional rollers I, and said turn-table H is caused to revolve at exactly one-half the angular velocity of vturn-table K, thus causing the wheel F to move encyclically about the center 0f the compensating turn-table H, which motion (if the wheels E and F are of equal size)willex actly compensate for the motion ofwheel E with turn-tableK, the revolutionof said turn- 5o table K thus failing to revolve the wheel F about its own axis, as would be the case if the bearing of the shaft G. were stationary. It is thus evident that the motion imparted to the driven machinery will not be varied by the revolution of the turn-table, caused by changes in the direction of the Wind; but will be as the motion of the Wind-wheel shaft.

It will also .be apparent that the wheels E and F need not be of the same size; but should 6cthey differ in size it will become necessary to change the relative rate of speed of turn-tables K and H.

Having thus described my invention, what I claim as new therein, and that for which Idesire to secure Letters Patent, is-

1. In the windmill described, a secondary or compensating turn-table actuated by the movement ot' the main turn-table, as and for the purpose set forth.

2. In a gearing for Windmills, the combination, with the wind-wheel shaft, of shafts D and G, connected by gear-Wheels E and F, the parts arranged as shown, and for the purposes set forth. l .75

3. In a gearing for windmills, thecombina tion, with shafts D and G, connected by gear- Wheels E and F, of the compensating turntable H, actuated vby the movement of turntable K, substantially as described and shown. 8o

1n testimony whereof I afx. my signature in presence of two witnesses.

-LEANDER M. HOSKINS. Witnesses BURR W. JoNEs, A. W. SHELCroN. 

